#include <bits/stdc++.h>
using namespace std;
int n,a[100005],ans;
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        scanf("%d",&a[i]);
    }
    sort(a+1,a+n+1);
    for(int i=1;i<=n;i++){
        for(int j=i-1;j>=1;j--){
            if(a[i] > a[j] && a[i] != -1 && a[j] != -1){
                a[j] = -1;
                break;
            }
        }
    }
    for(int i=1;i<=n;i++){
        if(a[i] != -1){
            ans ++;
        }
    }
    printf("%d",ans);
    return 0;
}
